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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=95
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Rossi, F. S.;
Neal, J. C.;
Senesac, A. F. |
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| Author Affiliation: | Grad. Student and Asst. Prof., Cornell Univ. and Weed Extension Specialist, Long Island Hort. Research Lab |
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| Title: | Effect of Crabgrass Growth Stage on Efficacy on MON 15151. |
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| Source: | Proceedings of the 43rd Annual Meeting of the Northeastern Weed Science Society. Vol. 43, 1989, p. 95. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Digitaria sanguinalis; Growth; Dithiopyr
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| Abstract/Contents: | "The ability of a herbicide to provide consistent control is largely dependent on proper application timing. Experiments were conducted in 1988 on a fallow area and ona Kentucky bluegrass turf to determine preemergent activity of MON 15151. results indicate excellent preemergent control of crabgrass (Digitaria spp.) on the turf with 0.56 kg ai/ha and 0.84 kg ai/ha on the fallow area. A postemergent trial was performed on a drought stressed area with rates of MON 15151 between 0.28 and 1.68 kg ai/ha compared with fenoprop and MSMA at recommended rates. A linear rate response was demonstrated for early and late post applications of MON 15151. Early post MON 15151 applications to untillered crabgrass were more effective than fenoxaprop, but not as effective as MSMA. Drought conditions at the early post timing prevented fenoxaprop from affording more than 37% control, while MSMA, less influenced by drought, exhibited 88% control. Middle post treatments following rainfall to 1 to 3 tillered crabgrass were not significantly different at rates above 0.56 kg ai/ha, therefore did not exhibit a rate response, and were less effective than fenoxaprop and MSMA. Treatments of MON 15151 applied to crabgrass with more than 3 tillers were consistently less effective than early and mid post treatments at corresponding rates. Late post applications demonstrated a linear rate response, with a minimum of 1.4 kg ai/ha required to provide >80% control. Further, late post rates above 1.4 kg ai/ha were as effective as fenoxaprop and more effective than MSMA, which normally requires multiple applications particularly at late timings. Overall results of MON 15151 suggest excellent performance as a preemergent, early timing treatments at rates above 0.56 kg ai/ha to be most effective and comparable to MSMA, while providing better control than fenoxaprop under droughtly conditions. Applications to tillered crabgrass requires rates above 1.12 kg ai/ha to be as effective as standard treatments." |
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| Language: | English |
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| References: | 0 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rossi, F. S., J. C. Neal, and A. F. Senesac. 1989. Effect of Crabgrass Growth Stage on Efficacy on MON 15151.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 43:p. 95. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=95
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
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